Cooler



FIG. 1 is an upper front left perspective view of a cooler showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof; and,

FIG. 6 is a top plan view thereof.

Surfaces shown in FIGS. 1-6 appear as simulated ice. The “RED BULL” name and symbol shown in broken lines in FIGS. 1 and 2 illustrate environment and form no part of the claimed design. The configuration of the interior of the cooler design shown in FIGS. 1 and 2 is the same. 

CLAIM The ornamental design for a cooler, as shown and described. 